Debian dla-4630 : libcrypto1.1-udeb - security update

high Nessus Plugin ID 321085

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4630 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4630-1 [email protected] https://www.debian.org/lts/security/ Arnaud Rebillout June 15, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : openssl Version : 1.1.1w-0+deb11u8 CVE ID : CVE-2026-7383 CVE-2026-9076 CVE-2026-34180 CVE-2026-42766 CVE-2026-45447

Several vulnerabilities have been discovered in OpenSSL, a Secure Socket Layer toolkit providing the SSL and TLS cryptographic protocols for secure communication over the Internet.

CVE-2026-7383

A signed integer overflow when sizing the destination buffer for Unicode output in ASN1_mbstring_ncopy() can lead to a heap buffer overflow.

CVE-2026-9076

When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kek_unwrap_key().

CVE-2026-34180

Parsing a crafted DER-encoded ASN.1 structure with a primitive element whose content exceeds 2 gigabytes in length may cause a heap buffer over-read on 64-bit Unix and Unix-like platforms.

CVE-2026-42766

A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption.

CVE-2026-45447

A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification.

For Debian 11 bullseye, these problems have been fixed in version 1.1.1w-0+deb11u8.

We recommend that you upgrade your openssl packages.

For the detailed security status of openssl please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/openssl

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libcrypto1.1-udeb packages.

Plugin Details

Severity: High

ID: 321085

File Name: debian_DLA-4630.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 6/15/2026

Updated: 6/15/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-45447

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libssl-dev, p-cpe:/a:debian:debian_linux:libssl1.1-udeb, p-cpe:/a:debian:debian_linux:libssl-doc, p-cpe:/a:debian:debian_linux:libssl1.1, p-cpe:/a:debian:debian_linux:openssl, p-cpe:/a:debian:debian_linux:libcrypto1.1-udeb

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/15/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2026-34180, CVE-2026-42766, CVE-2026-45447, CVE-2026-7383, CVE-2026-9076

IAVA: 2026-A-0589

Detections

Analytics